float inc = 0.0;

void setup() {
  size(100, 100);
  stroke(255, 204);
  smooth();
}

void draw() {
  background(0);
  inc += 0.01;
  float angle = sin(inc) / 10.0 + sin(inc * 1.2) / 20.0;
  tail(18, 9, angle / 1.3);
  tail(33, 12, angle);
  tail(44, 10, angle / 1.3);
  tail(62, 5, angle);
  tail(88, 7, angle*2);
}
void tail(int x, int units, float angle) {
  pushMatrix();
  translate(x, 100);
  for (int i = units; i > 0; i--) {
    strokeWeight(i);
    line(0, 0, 0, -8);
    translate(0, -8);
    rotate(angle);
  }
  popMatrix();
}